First, you will need to restrict showing apps and/or web clips: 

1. Go to Profile > + Create New
2. Provide Profile Name.
3. Click + New Configuration.
4. Select Apps.
5. In Whitelisted Apps, search and select app(s) you just want to show.  (Please make sure these apps have been installed onto the iPads)
6. Click + New Configuration again.
7. Select WebClip.
8. Provide WebClip information. (Please make sure "com.apple.webapp" has been added into Whitelisted Apps)
9. Click Save or Save & Apply to proceed. 

Then, apply the profile to targeted devices:

1. Go to Device > Device Management
2. Click Bulk Action > Settings > Install Profiles
3. Select the profile you have just created above