# Multiple analysis selections

Once you have defined your analysis and base selections, and specified the modelling point-in-time, the analysis and base selections are added to the Selections tab:

To edit the scenario:

1. Right-click within the **Selections** window and select **Edit event driven analysis/base scenario**.

   You can modify the scenario and then choose whether you would like to **add** the modified scenario as a new pair of selections, or leave on the default, which is to **replace** the current selections.
2. Choose as appropriate and **OK** to confirm your changes.

## Manage multiple selections

Once you have multiple alternative analysis/base selection pairs, the **Use Selection** column determines which pair is used in modelling.

It is also this pair which will be edited by the right-click option.

As you create more selections you may wish to change their descriptions to make the display clearer:

1. Right click on the selection with the description you wish to amend
2. Click **Edit selection details**

In this window you can edit the name and add notes that might be useful to you and others at a later date. The screenshot below demonstrates the renaming of selections: