I'm trying to build a world where an earth-like planet is tidal locked to a sun in a three star system, where the other two would orbit each other in the center (being the central mass of the system). Is it possible? What is the perfect star scenario to life exist in the planet? Would the two stars in the center have a Sunrise/Sunset effect in this planet? Would there be a way to control time passing through those two suns (like they appearing in the scenery in an year time lapsing, or something like this). Thank you!
It is possible for three stars to orbit roughly as you suggest and examples are known: https://en.wikipedia.org/wiki/EZ_Aquarii
You have not provided a detailed description of the system so it is hard to answer specifically. However any calculation to find stable orbits involving three bodies should be based on the Hill Sphere approximation: https://en.wikipedia.org/wiki/Hill_sphere
The sun rise and sun set pattern is dependent on many factors such as the orbital radius of all of the stars and the planet, the inclination of the planets axis, the orbital eccentricity and inclination of the orbits relative to each other.
Assuming all orbits are circular, in the same plane and with zero inclination and viewing from the “far side” of the tidally locked world the twin central suns should rise and pass across the sky relatively close to each other before setting. The next day the process repeats although the relative positions of the twin suns will change (probably slowly relative to the planets rotation) at some points in the “year” both of the twin stars will eclipse the other.
If you want to have two stars orbiting each other in the center, the combined mass must be equal to the mass of the third. Your planet would orbit the largest star. The two other stars would be avble to provide a daylight circle to the "outside" of your planet with the length of the day beeing the time it takes to revolve around its sun.. Life would evolve at all it would do so on the side opposite to the star the planet is tidally locked to, due to the heat on the other side.