After defining the dome in the required position and geometry in your project,
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click the
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Set Dome
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/Vault
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Restraints command in the Dome auxiliary toolbar.
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The Set Boundary Conditions dialog will open.
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In the dialog that opens, after marking the boundary conditions for solution
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with
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building system, make your arrangement so that only the option/options that are supported on each side of the dome will remain active.
If you want to solve the dome element with the structure, it would be a better solution to select the Semi- Use semi rigid diaphragm option from the Analysis Settings / dialog, General Settings tab.
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