Running canasta for 10
For 10 players you will need 2 tables, 5 decks with jokers (2 for the table of 4, 3 for the table of 6), and 3 sheets of paper for the score cards (four to a page).
Canasta games are long, so plan a few rounds: one game (or a set number of deals) per round. Partners sit across at a table of 4. At a table of 6, play two teams of three, sitting alternately.
With 10 players the chart uses a table of 6, so everyone plays every round. If you would rather keep every table at 4, the planner can do that with 2 people sitting out each round.
Each score card lists that player's table, partner and opponents for every round. Want names on them, a different number of rounds or a fresh shuffle? Open this chart in the planner.