Creat a formulated 24 hours project schedule in excel

Job ID: 35407309

Budget: $10 – $30 USD

I have entered all the data needed and i have a layout in mind but i cant formulate the starting date+time to the (activity start - activity finsh) time

I would like someone who is knowledgeable in this area to help me and expand it to me

* PS i know i can do it better on MS Projects but my manager requested it on excel ?

* YouTube video of what i want:
The video explains is in Days but i want Day+Exact hour

https://www.youtube.com/watch?v=h6MpE8hZVIw

My own Excel sheet is attached as well..
Related categories: Data Processing Excel Project Scheduling