Using the Actions tab you can filter places and perform bulk actions like assigning price lists to more places at once.
1. The Actions tab is located right next to the Activities tab. Click on it to enter.
2. Select the Places from the place list you want to be assigned to a certain price list. You can choose all by checking the "Select all" box or you can choose which places to select.
You can combine many filters on the right to narrow down your list and when you make your selection, click on the Assign a pricelist as pictured below.
3. When you make the selection, click Apply like in the picture below.
Once you click on apply, the selected price list(s) will be available to the place you have chosen.