project area without timeline

Hello,

I have worked with agile projects where defining Timelines, Releases and iterations is very important, but now I work for a company with a simple structure and a very basic development cycle, and I do not want to complicate them by adding elements that do not add value to them. They got no ALM, now I am introducing JTS.

Is strictly necessary to create timeline, realeases and iterations in RTC?. what is the most simple structure?

Note: Right now I have defined a Timeline for projects and mainteinance development.

Thanks for clearing my doubts.