You adapted a business role home view and created a custom kanban tile for Leads object, however this tile is not visible for the user.
"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."
SAP Cloud for Customer.
The user is not assigned to the WCV
/BYD_COD/SalesOnDemand/Marketing/Prospect/COD_Mkt_Prospect.WCVIEW.uiwocview so you don't see the kanban board.
User need to have assigned:
COD_MARKETING - Sales Campaign > COD_MKT_PROSPECTWC - Leads
COD_SALES_WCF - Sales > COD_MKT_PROSPECTWC - Leads
Leads Kanban, Tile, Kanban , KBA , LOD-CRM-HOM , Home Page , Problem