How do I add two roles to 100 users at a time?

At the time of implementation we mostly required 100 or 200 user assign in a single or multiple role. Using below steps we can assign multiple role in unlimited users at a time.

You can carry out this step using the User Mass Changes transaction SU10.

You'll find out how to achieve it by following these steps:

Step 1. Run SU10.

Step 2. Choose the users to whom you wish to assign the roles.

Click on Address Data.

Enter any user criteria if applicable. If not, press Execute to see all users.

Check the users you wish to return to the main maintenance window on the next screen.

Click Transfer.

Step 3. The user maintenance screen ought to display the users you selected. Otherwise, repeat step 2.

Step 4. Click Change.

Step 5. Assign the roles.

Select Roles.

You should enter the roles you wish to give the users.

Make sure that Add is chosen.

Press Save.

When prompted to save the bulk changes, select Yes.

Step 6. Verify there were no mistakes by reading the log.

This method may also be used to delete roles from multiple user accounts.

Notes:

There was a security job named "SAP_ALL_DISPLAY" in R/3 4.6C and before. Verify that this was deleted from R/3 Enterprise.

That's accurate. R/3 Enterprise no longer supports "SAP_ALL_DISPLAY." However, SAP included several SAP_* single and composite roles in R/3 Enterprise, so you might want to have a look at those.