[EpiData-list] Selecting multiple options

Dear all, How do i make it possible for multiple options in the questionaire to be picked instead of only one. For example.

3.Since This time Yesterday Has the child recieved any of the following?(Tick all that Apply)

ÿ 1 = Vitamin,Mineral supplementation orMedicine

ÿ 2 = Plain water

ÿ 3 = Sweetened, flavoured water or fruit juice or tea or infusion

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ÿ 4 = Oral rehydration solution (ORS).

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ÿ 5 = Tinned, powdered or fresh milk or infant formula.

ÿ 6 = Solid or semi-solid (mushy) food

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ÿ 7 = Any other liquids (specify):

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* * How do i set it that all chosen options are entered.