I think you are asking how to have consistency, e.g. in the line weights of annotations that you repeat many times?
If so in Composer you have to create styles, these save the properties that yout have changed for your collaborative actors. The quickest way is via the Styles tab, click on Quick Style. Alternatively for full control you can use the styles workshop, this takes longer but is good to learn so you understand how it works.
I prefer to have auto subscribe desleected otherwise everything you create is locked to that style unless your click unsubscribe but it is preference. I'll see if i can dig out a video from somewhere for more depth, its something that makes more sense when demonstrated!
Thanks for your answer Alan
It's almost good, except when I create a style for a block of text (this is an art code number that always goes in the lower right corner of the paper space for each view I create, the code number is different every time) I can make everything I need for the style, like font and font size etc, but cannot change the text string after applying the style.