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This documentation is for ACS 11.4.x.
Documentation for earlier versions of ACS are available too.

# Deciding How Many Check-in Stations You Need

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Determining the number of check-in stations you need is always a challenge. Use the Checkpoint Stations Formula and Check-in Time Tables to decide how many stations you need per entrance.

# Checkpoint Stations Formula

This formula can help you determine the number of check-in stations to use at a particular entrance.

Divide the number of families that typically check in each week by the entrance's heaviest traffic time in minutes. Then, multiply that answer by your check-in goal. For the calculation, measure the check-in goal per family and in minutes, such as 20 seconds per family, or 0.33 minutes. In general, you should aim for a single person to check in within eight seconds and a family to check in within 30 seconds.

The formula looks like this:

 For ExampleAt your church's main entrance, 60 families typically check in during a 15-minute period. This is the heaviest period of traffic. To determine the number of Checkpoint stations you need, the formula looks like this:        To correct any impossibilities and allow for growth, round up to the nearest whole number. So, your church needs 2 Checkpoint stations at its main entrance.

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# Check-in Time Tables

These tables suggest how many check-in stations you may need for different conditions. The tables calculate the number of checkpoint stations depending on how long it takes families to check in and traffic time intervals. Use the tables to help you determine the number of stations that your organization needs.

## Table 1 — 15 minute period

Table 1 shows how many families can check in during a 15 minute period, according to how long it takes each family to check in and how many check-in stations are available.

Time to check in

1 Station

2 Stations

3 Stations

4 Stations

40 sec.

22 families

44 families

66 families

88 families

35 sec.

25

50

75

100

30 sec.

30

60

90

120

25 sec.

36

72

108

144

20 sec.

45

90

135

180

15 sec.

60

120

180

240

## Table 2 — Time intervals

Table 2 shows how many families can check in at a single station during a specified interval of time, according to how long it takes each family to check in.

Time to check in

5 Minutes

10 Minutes

15 Minutes

20 Minutes

40 sec.

7 families

15 families

22 families

30 families

35 sec.

8

17

25

34

30 sec.

10

20

30

40

25 sec.

12

24

36

48

20 sec.

15

30

45

60

15 sec.

20

40

60

80

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