unlock extension

How do I unlock extensions? The answer on the pages doesn’t actually tell me. Please e-mail me the answer, as how will I know that someone has answered me, and where will I find the answer if they have? My e-mail address is:

Many thanks in anticipation

Graham

@trudge - I removed your email address to protect your privacy because this is a public site. You don’t need to publish your email address. Replies to your question will be placed below.

Should you want to publish your email address here by all means, please edit your question and add it again.

Please have a look at; What information should I include in a question in addition to OS and LibreOffice version? - #4 by ROSt53

Also refer “How to use the Ask site” link at top right i.e., it is not clear from the question what “unlock” means in this context.