Time server alike

[aiashineshin]

We have a computer shop and we don't have a server yet. But I was thinking of having a "temporary". I've been thinking of VBA but i've been searching about adding time but i can't construct the code, what can be a possible syntax for:
when i entered the time to the cell and then to the next cell is how many hours, and then the output in the next cell is the ended time.

time started > hrs > time ended

 

[Scott Huish]

Why do you need VBA for that? That's very easy to do via formula. Are you adding hours as time. i.e. 7:00 or as decimal 7.00?