You can allow a larger set of users to request projects so that Jira admins can then approve and process those requests.

Grant permissions to a group

1. Select the Cog menu  > Add-ons.
2. Locate the Delegated Project Creator section in the left sidebar and select Project Request Settings.
3. From the Request Permissions tab, select a group to add from the dropdown and click Add group to Requestors.
   

Revoke permissions from a group

From the Request Permissions tab, click delete next to the group whose permissions you want to revoke.