Let's use the term "socket" rather than "hole".
The meter section of a multimeter usually consist of a millivolt meter. Full scale is typically ±199.9 mV (200 mV nominal) for what's now considered a low-quality meter and ±399.9 mV, etc., for better meters with higher resolution. All measurements including voltage, current and resistance have to be converted to mV in this range to get a meaningful reading.
From Ohm's law we can calculate the shunt resistance value required to generate the required voltage for various current ranges:
2.000 mA 100 Ω
20.00 mA 10 Ω
200.0 mA 1 Ω
2.000 A 0.1 Ω
20.00 A 0.01 Ω *
* Most meters will use this value for the 10 A shunt value but the power rating is only good for 10 A.
The idea here is that inserting the meter into a circuit to measure current will cause a maximum voltage drop of 200 mV and minimise the disturbance to the circuit under test.
Figure 1. Innards of a no-name multimeter. Source: Dismantle-It.
In the PCB of figure 1 notice the fine traces going to the range selector contacts. These won't take 10 A. Also notice the 10 A shunt resistor (a piece of resistance wire) mounted at the bottom of the board but standing off it for cooling. The manufacturers seem to calibrate it by attaching the brown voltage measurement lead at the appropriate position along the shunt - hopefully after a test measurement.
Any decent meter will use a dedicated socket for the high-current range to avoid running high currents through the selector switch.