START, FOLLOW & REPLY on #lemmy from Mastodon.
@test@lemmy.ml

I use the Lemmy community ‘test’ as an example

START
- start with the title of your thread
- enter the name of the community where you want to post: ‘@test’
- enter the body text.

FOLLOW
- Right of the thread in Lemmy you see a blue box with the name of the thread (‘!test@lemmy.ml’)
- In Mastodon, enter the name in the search box but remove the ‘!’.
- follow

REPLY
Simply reply to the posts in your timeline.

Thanks to @maegul