In Office 365 and SharePoint, there are a variety of permission levels that allow users to access the resources they need. They tend to group actions and define what users can and can't see within your environment.
If you, as an administrator, try to check where does the user has access to in your environment, you would have to go through every site collection and check for a specific user.
However, if you use SysKit Point it allows you to reach this collected data for a specific user's access in a single report.
Here's how you can do it.
From the Welcome Home screen, you can either click the Reports tile or directly to User Access report.
If you've clicked on Reports you will be redirected to Report Center where you can select User Access report.
After clicking on User Access, you are redirected to Selection page. There you can see all the Users on your Tenant.
You can filter through Users by changing the type of view you're using. Change the type of view by clicking on view selector on the left side of the screen.
Clicking on Column Chooser also enables you at adding additional columns to the grid so you can filter further through those columns. To open a Column Chooser click the icon next to the Search bar on the right.
Last type of filtering is by using the Search bar which is located on the right side of the screen. Type into it to find a specific user you want.
While making a selection you have various possibilities. Clicking on a checkbox next to a Display Name column will select all the Users on the current view.
By clicking on checkboxes next to a User you can make a single or multiple User selection.
If you know names of Users you want to generate a report for and you don't want to scroll through the User list. You can use Search bar to enter each name and click the checkbox next to User's name.
After you've made a selection, click Run Report, it will generate User Access report for all the users you selected.
When report is generated, if you focus on the right side of the screen you will see the side panel.
If you haven't selected anything in the report, there will be an option to Export your report.
You can export the report into PDF and Excel.
If you make a selection on a Root level of the report, be it single selection or multi-selection, side panel changes, and action Remove Access becomes available.
Also, you get the option to generate other SysKit Point reports for selected objects from there.
You've visited the site details page of one Site Collection on your tenant. There you can see the Overview tile, which has Users and External Users metric.
If you click the Users metric, you will be redirected to the page which shows you all types of users that have access to that Site Collection.
Clicking on External Users metric will show you only external users that have access to that Site Collection.
If you select some users on that page, you will get options in Side panel to generate a User Access report.
Generating a report from there will show what kind of access do users have on that Site collection.
From Home Screen, click the Users tile, which redirects you to the Users Overview screen.
On Users Overview screen, you see all the Users on your environment.
Select any user, and on the side panel, click the User Access.
You will get a User Access report generated for the selected user on which you can see what kind of access does the user has on all objects of your environment.