You will need to collect enough bee jars (15 per hive) to have 10 beehives at once. This one takes some time and patience.
You will need to have placed a bee jar in the research table to unlock the beehives. You gain bee jars by capturing bees with the net. Be patient and let the bees get close to you before you sweep them up. Jumping and chasing them will be less effective. They can do minor damage to you, but you will gain in back quickly.
The best place for bees is at Balboa, it has the most bees available in the game. One trip around the island usually is enough bee jars for ~1.5 beehives.