You may be familiar with setting your markups for all future proposals (if not, see this article). You can also update and adjust your markups on individual proposals as well.

If you have set your markups in Proposal Settings, they should automatically populate on each new proposal you create. 

However, sometimes you may need to make adjustments based on your customer, the season, or your supply of goods.

To do so, navigate to the top of the proposal page and click Settings, then select Markups.

Note: If you adjust your Floral and Supply markups all previously added items will be updated. If you adjust your Labor Markup, it will only affect newly created Items.