Hello and welcome @saish 
Do you mean a different composer template based on the type of topic being created?
If so, I don’t think there’s a way to do that using tags yet but it could be achieved using the form templates if you had a category for each type. There’s also the regular topic templates as well (found in a category’s settings page), but these only allow you to add some pre-filled text to the composer, which might not be exactly what you’re looking for.
(Though there is an existing #feature request to be able to use the form templates with tags that you may want to add your voice to Setting Form Templates with a tag)
There’s also the Discourse Preset Topic Composer plugin which could come in handy as well if you wanted to simplify how users select a particular option.