Splitting total sum into multiple different %

Hi,

I am completely new to excel but I was wondering if there was a way to split a total sum by entering it into a column into many different sums.

I would like to add a total amount of $ per fortnight into our offset account but I would like that total amount to be allocated to different things- ie: Holiday money, pets money, household maintenance money etc.

I have no idea how to set this out and preferably would like to follow an online tutorial on it but don't even know what to type into a search bar?

any help of tips appreciated.

Regards,

Kristin