Swept Away broom enchantment 3

Notes and Quest Details

Not even sure if this is a requirement for anything. Or what it refers to. Maybe to do with this quest? 

Actually after looking up the broom they mention this:

After completing Swept Away, the broom can be presented to a number of other prominent witches across Gielinor for a new teleport option to the Sorceress's Garden and one-time Magic experience rewards. Presenting the broomstick to each witch is a requirement for the Advanced Sweeping achievement, trimmed completionist cape, and master quest cape.

May as well wait until lunar diplomacy is finished and then do the sweeping all at once.