Dimmer switch for a multi bulb lamp

[ReaderScars]

I'd like to incorporate a dimmer switch into a 240v lamp base which features x4 20w bulbs.

It seems that using the module out of a wall dimmer for ceiling lights isn't an appropriate type - or if it is, could someone please explain in (very) simple terms how to wire up the x4 lives, x4 neutrals from the bulb holders (earths are combined and connected to the metal lamp base).

The module I've got is 1 in, 1 out - I think I need x2 in+out?

Any suggestions or recommendations for dimmer modules please?

[ReaderScars]

OK, will do - thanks for the clear explanation. Don't feel too bad if I don't post for a while - I won't blame you.

[ReaderScars]

Works great - thanks. Multi tester seems to indicate everything's earthed, looks like it's safe to take the rubber gloves off.