DiscuzX3.2 how to disable post and signature links

Disable Post link
Background --> User Group --> edit --> allow external URLs:
Forbidden to post
Yes, but the post is under review
Allowed, but not parsed
Allow and parse normally
Note: four options can be selected for red text. Reasonable settings can effectively reduce the number of advertisement posts.

Disable signature link
Background --> User Group --> edit --> Forum --> post
Discuz is allowed in the signature! Code
Yes no
Note: set whether to parse Discuz in the user signature! Code
Allow the use of [img] code in the signature
Yes no
Note: set whether to parse the [img] code in the user signature

Disable signature
Background --> User Group --> edit --> Forum --> post --> maximum length of signature text --> set to 0