Having list options based on a cells value

I have a table as follows in a 2nd worksheet

4 License
8 License
16 License
32 License
64 License
128 License

In the main worksheet I have Cell B2 as List that allows you to choose 4-128 no problem
Cell B1 is the number of computers

IF B1 <= 4 B2 would display all options
Now the tricky part:
IF B1 =>5 I would like to have only 8 thru 128 available to display
IF B1 =>9 then only 16 thru 128 display
etc, etc

I have been playing with nested IF Statements but not sure if this is the correct way or my syntax is off.

Thanks

@protonLeah
I am not having an issue attaching a workbook. I am having a formula issue.

I am trying to create a automatic configuration.

Let Say cells D1-D4 have:

4 License
8 License
16 License
32 License

Cell B1 has a data validation list ref D1:D4

Now cell B1 is a free form numeric entry. You can enter 4 or less and all items in B1 are displayed
IF I select B1 to equal 5 (then a 4 License would not be applicable) B2 should only show D2:D4 on the list
IF I select B1 to equal 15 Then D3:D4 should be my only options in the list

Thanks

DynamicDrop.xlsx

Ahh, I understand. Newbie Duh !

I attached the Workbook. I created with a single sheet and I included the old way by creating multiple lists. I know I can create a logic statement that chooses different list but this seems clumsy BUT maybe the only way to do it.

Thanks