You have a couple/few options. I think number 1 is probably your best option, followed by 2, then by 3.
1. Use the ‘Advanced Multi-Row Queue Sequence’ This feature would give you the highest degree of control. You could run multiple hosts simultaneously, and then when that first set of hosts is done, the next set would be triggered to run, followed by the next set, and so on. The entire process could be kicked off with one click, and then it would run through to completion on its own.
2. Use the ‘Basic Multi-Row Queue Sequence’ This feature would enable you to run one host at a time, sequentially.
3. Use the ‘Row Execution Interval’ (Tools > Row Execution Interval). This feature would let you control how many seconds pass in between the execution of each selected row. So if you select 10 rows with a row execution interval of 60 seconds, then row 1 will execute. After 60 seconds, row 2 will execute. After another 60 seconds row 3 will execute. And so on.
-Doug