Computationally efficient restocking display

A computer-implemented method comprising:

• displaying a user interface showing colored pins on a map and a list of fill groups, each colored pin representing a location of at least one distinct product type that requires restocking and each fill group representing a respective collection of distinct product types where at least one of the distinct product types in the collection requires restocking, wherein the color of the colored pins indicates a degree to which restocking is needed and wherein two of the colored pins have different colors but represent locations of two respective product types of a single fill group;
• receiving an instruction through the user interface to set a restocking task to restock a fill group;
• and
• causing a restocking task to be set in response to the received instruction.

A system comprising:

• a first mobile device configured to display a map indicating which products need restocking and to display a restocking request control for a fill group representing a collection of products that are restocked as a group, wherein upon selection of the restocking request control, the first mobile device transmits a restocking request for the fill group;
• a server, configured to receive the transmitted restocking request and in response cause a restocking task for the fill group to be transmitted;
• and
• a second mobile device configured to receive the transmitted restocking task and to display a user interface indicating the products in the fill group that need to be restocked as a group.